Reversing gear



June 24, 1930. J. J. KEYsER REVERSING GEAR Filed Aug. 12, 1929 PatentedJune 24, 1930 JOHANN JACOB KEYSER, F AARAU, SWITZERLAND REVERSING GEARApplication filed August 12, 1929, Serial No.

Improvements in spinning and twisting machine gears.

' The speed changing and reversing gearsv for the actuation of thefeeding and stretching mechanism of spinning and twisting machinesheretofore in use were normally so constructed that a change of thedirection of rotation was only possible by an exchange of pinions. Mypresent invention permits such change to be eflected at the exclusion ofundesired bevel gears and at the further exclusion of non-parallelshafts, the driving and driven shafts being usually ar ranged inparallelism with this type of machinery. I obtain this result byarranging on one of the parallel shafts an interiorly toothed pinionadapted to mesh with the one or other of two permanently meshingintermediate pinions the one of which is in a permanent operativeconnection with the other shaft. The two intermediate pinions.

are preferably carried by a slide-bracket or support adapted to beadjusted into and locked in two operative positions corresponding,respectively, to a left or right hand rotation of the shaft of thefeeding and stretching mechanism. e

In the drawing illustrating a preferred embodiment of my invention,

Fig. l is a front view of the new reversing gear, partly broken out,

Fig. 2 is a plan view thereof, partly in section. f

In the drawing 1 designates the main shaft of the stretching or feedingmecha nism of a spinning or twisting machine, upon which an internallytoothed pinion 2 is -mounted. Within the said pinion I arrange twopermanently intermeshing pinions 3 and 4, supported upon a slide-bracket5 and being each adapted to mesh with pinion 2 by a vertical adjustmentof slide 5. The combined numbers of teeth or diameters of pinions 3 and4 are such with relation to the pinion 2, that when pinion 3 is in meshwith pinion 2, pinion 4 will be out of engagement therewith and viceversa, as will be readily understood.

Pinion 3 is loosely mounted upon a pin 6 supported by bracket 5, whereaspinion 4 385,334, and in Switzerland October 18-, 1928.

is mounted on' a shaft 7 carrying at'its one end a transmission .gear 8permanently meshing with a pinion 9 which is operated throughintermediate sprocket or any other suitable mechanism by the maindriveof the machine not shown. The bracket 5iis guided at its base 10 on aguiding bar or rail 11 of the main machine frame or'shield 13 and may befixedly clamped thereto by bolt 12. It will be noted that all offtheshafts '60 1, 6, 7 and the shaft of pinion 9 are arranged inparallelism, as this is customary and desirable with the type ofmachinery inconsideration. V

hen gear 8 is actuated by pinion 9 it acts on pinion 2 either by bothpinions 3 and 4 (Fig. 1), when the bracket 5 is in its upper position,or directly, by pinion 4; alone, when the'bracket is in its lower endposition, pinion 3 being idle in this instance, so-that by av simpleupward or downward shift of bracket 5 the direction of rotation of shaft7 1 may be reversed. It will be noted that upon suchreversal theactuating pinion 8 is also vertically adjusted whilemaintaining itsengagement with. the driving pinion 9;. the vertical adjustment of slide5'being however comparatively small, it does in no way affect the properand permanent intermeshment of the pinions 8 andz9'.

I' claim: 7 V

1. In areversing gear forspinning and twisting machines having feedingand stretching mechanism an actuating shaft for the said feeding andstretching mechanism, 8 "an, internally toothed pinion mounted "on thesaid shaft two permanently meshing 111- termediate pinions having apermanent op- 'erative connection with a. driving shaft are rangedparallel with the said actuating shaft and sliding means carrying'thesaid intermediate pinions and permitting to effect intermeshmentthereof, respectively, with the said internally toothed pinion whilemaintaining their operative connec- 9 tion with the said other shaft.

2. In a reversing gear for spinning and twisting machines having feedingand stretching mechanism an actuating shaft for j the said feeding andstretching mechanism,

an internally toothed pinion mounted on the said shaft two permanentlymeshing intermediate pinions a driving shaft arranged parallel with thesaid actuating shaft and having a permanent operative connection withthe one of the said intermediate pinions, and a lockable slide carryingthe said intermediate pinions and permitting to effect 7 intermeshmentthereof, respectively with the said internally toothed pinion so thatthe same may be rotated by the said; driving shaft directly and in theone direction through the intermediary of the intermediate pinion whichhas the operative connection with the driving shaft or in the oppositedirection by the intermediary of both intermediate pinions. p

8. In a reversing gear for spinning and twisting machines two shaftsarranged in fixed parallel relation, an internally toothed pinion on theone shaft, two permanently meshing intermediate pinions, an operativepinion connection between said intermediate pinions and the other shaftincluding a pinion on said other shaft and a pinion on the shaft of oneof said intermediate pinions, and means for effecting intermeshmentrespectively of the one or the other of the two permanent meshingintermediate pinions with the said internally toothed pinion whilemaintaining the operatve pinion connection between said intermediatepinions and said other shaft.

4;. In a reversing gear for spinning and twisting machines havingfeeding and stretching mechanism, an actuating shaft for the saidfeeding and stretching mechanism, an internally toothed pinion mountedonthe said shaft, two permanently meshing intermediate pinions, a drivingshaft arranged in fixed parallel relation with said actuating shaft andhaving a permanent operative pinion connection with one of saidintermediate pinions, and means for effecting interineshment ofthe oneor'the other respectively of' the two intermediate pinions with saidinternally toothed pinion so thatthe same may be rotated by said drivingshaft directly and in the one direction through the intermediary of theintermediate'pinion which has the permanently operative pinionconnection with the driving shaft'or in the opposite direction throughthe intermediary of both intermediate pin ions and the said permanentlyoperative pinion connection.

In testimony whereof I affix my signature.

JOI-IANN JACOB KEYSER.

